refactor: added config file and moved constants

- Moved hardcoded configuration constants to a dedicated config.py file.
- Created VideoConfig, AudioConfig, MainConfig, and Settings classes in config.py

ref: N25B-236

src/robot_interface/endpoints/audio_sender.py

@@ -8,13 +8,13 @@ import zmq
 from robot_interface.endpoints.socket_base import SocketBase
 from robot_interface.state import state
 from robot_interface.utils.microphone import choose_mic
-
+from robot_interface.core.config import settings
 
 logger = logging.getLogger(__name__)
 
 
 class AudioSender(SocketBase):
-    def __init__(self, zmq_context, port=5558):
+    def __init__(self, zmq_context, port= settings.agent_settings.audio_sender_port):
         super(AudioSender, self).__init__(str("audio"))  # Convert future's unicode_literal to str
         self.create_socket(zmq_context, zmq.PUB, port)
         self.thread = None
@@ -49,13 +49,14 @@ class AudioSender(SocketBase):
         self.thread = None
 
     def _stream(self):
-        chunk = 512  # 320 at 16000 Hz is 20ms, 512 is required for Silero-VAD
+        audio_settings = settings.audio_config
+        chunk = audio_settings.chunk_size # 320 at 16000 Hz is 20ms, 512 is required for Silero-VAD
 
         # Docs say this only raises an error if neither `input` nor `output` is True
         stream = self.audio.open(
             format=pyaudio.paFloat32,
-            channels=1,
-            rate=16000,
+            channels=audio_settings.channels,
+            rate=audio_settings.sample_rate,
             input=True,
             input_device_index=self.microphone["index"],
             frames_per_buffer=chunk,